Rather than emitting pulses, passive radar systems rely on illuminators of opportunity, such as TV and FM radio, to illuminate potential targets. These systems are particularly attractive since they allow receivers to operate without emitting energy, rendering them covert. Many existing passive radar systems estimate the locations and velocities of targets. This paper focuses on adding an autom...

Passive radar is a rapidly emerging technology with many distinct advantages over traditional radar. Its exploitation of “illuminators of opportunity” renders it covert, as well as less expensive. Several passive radar systems, such as Lockheed Martin’s Silent Sentry and John Sahr’s Manastash Ridge Radar at the University of Washington, are already capable of detecting and tracking aircraft. Ou...

Reconfigurable computing system (RCS) is emerging as an important new paradigm of system design for present and future computing demands of application requirement in performance and flexibility. In this paper, we discuss the issues involved in the design space of Reconfigurable computing system. We have identified nine key steps in RCS design as application analysis, system partitioning into h...

The U.S. Army Laboratory Command, as part of its Robotics Initiative, is developing a testbed for cooperative, real-time control of unmanned land vehicles. The system requires the development and integration of many elements which allow the vehicles to perform both autonomous and teleoperated functions. The National Institute of Standards and Technology is supporting this program by developing ...

Abstract Background The digital cadmium–zinc–telluride (CZT)-based SPECT system has many advantages, including better spatial and energy resolution. However, the impacts of different acquisition reconstruction parameters on CZT quantification might still need to be validated. This study aimed evaluate (the main window time per frame) number iterations, subsets in iterative reconstruction, post-...

SOCLE is a hybrid representation system in which cells of constraints are identified with slots of frame networks. Constraint formulas are maintained with respect to slots in frame networks and in turn provide for the dependency regulation of values on the frames. This paper illustrates the use of SOCLE and outlines the control structure decisions made for its design and implementation.

in this paper, a new method for determining position and orientation of a coordinate system using its image is presented. this coordinate system is a three dimensional non-orthogonal system in respect to the two dimensional and orthogonal camera coordinate system.  in real world, it’s exactly easy to select three directions on an object so that they don’t be orthogonal and on a plane. the image...